A Concave Mirror Has a Focal Length of 20 Cm

question 40

Multiple Choice

A concave mirror has a focal length of 20 cm. What is the position (in cm) of the object if the image is upright and is two times larger than the object?

• A) 30
• B) 20
• C) 10
• D) 40
• E) 60

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Definitions:

Personal Space

Zone of space most often used for conversations with family and friends, ranging from 1½ to 4 feet between individuals.

Social Space

Zone of space most often used for group interactions, ranging from 4 to 12 feet between individuals.

Public Space

Zone of space most often used by public speakers or anyone speaking to many people, ranging beyond 12 feet from the individual.

Primary Indicators

The main or most significant signs or pieces of evidence that point to a specific condition, trend, or phenomenon.